Is there a trick to putting the halves back together? I'm having the hardest time getting both the jam door hinge, the shell, the internals and especially the pegs and holes on the pricing slide and bolt sled to align.

It looks like, for some reason, autocorrect insisted on changing "springs" to "strings" for me. I actually meant the gauge of the wire of the springs. But this is great information as well!

I love this! I'm looking to create one of my own, but I'm wondering about which strings to get and how strong they are. What is the wire diameter of the strings you've used, and would you still recommend that thickness?

Great instructable! I'm looking forward to start making one of these for my own house. One question: do you find the center 2x4 essential? I realize it provides support, but I don't like the way it puts a beam in the middle of the storage space. Would using just 2 2x4s and possibly a thicker board for the top provide enough strength for one or two people to sit on it?

I wonder of it would help to cover the pipes with a piece of glass or plastic in order to get a greenhouse effect, and some reflective material underneath the pipes. Maybe even put some one-way-mirror foil on the glass, with the mirroring side on the inside. That way sunlight can get in but can't get out, meaning as much heat as possible for the pipe.